Hi, i have denon 1908 av reciever. Most of time i use this with generator because of power problem. I have been facing a problem that whenever i connect my pioneer dvd with amp thru hdmi and amp to lcd again hdmi, it sounds some sparking noise from speaker, like some electric spark or something and later amp come to safe mode. But when i attach dvd direct to tv with hdmi and coaxil to amp, it works properly. I have informed denon people also but they are also confused about this. They say that it may because of generator power supply. If it is that then why it work well with coaxial. Any body can help me in this ?